Abstract: A grinding device comprises a grinding housing with mutually co-acting grinding bodies. A lower of the two grinding bodies is both driven and axially adjustable for the purpose of setting a grind size. An upper grinding body is removable. A grind size of the grinding device can be adjusted in absolute manner between a first extreme position and a second extreme position, corresponding to a fixed setting range between a minimal clearance between the two grinding surfaces and a maximum clearance between the two grinding surfaces. An extreme position of the adjustable grinding body is imposed by a stop which is encountered by the adjusting means in the relevant extreme position. A coffee machine uses the absolute grind size and/or a fine-tuning for an optimal contact time between coffee and through-flowing water.

Abstract: Grinding device, coffee machine and method for adjustment thereof. A grinding device (100) comprises a grinding housing (101) with mutually co-acting grinding bodies (110, 120). A lower of the two grinding bodies (110) is both driven and axially adjustable for the purpose of setting a grind size. An upper grinding body (120) is removable. A grind size of the grinding device can be adjusted in absolute manner between a first extreme position and a second extreme position, corresponding to a fixed setting range between a minimal clearance between the two grinding surfaces and a maximum clearance between the two grinding surfaces. An extreme position of the adjustable grinding body is imposed by a stop which is encountered by the adjusting means in the relevant extreme position. A coffee machine uses the absolute grind size and/or a fine-tuning for an optimal contact time between coffee and through-flowing water.

Abstract: The present invention relates to a dosing device for a product in powder form, comprising a holder (10) intended to hold a first quantity of the product therein. The holder is provided with dosing means to draw off the product from the holder and move it to an outlet. The dosing means comprise a worm body (20) with a worm thread (21). In a first aspect the worm body comprises at an outer end facing toward the outflow opening at least one further worm thread (22) which runs between the first worm thread (21). In a second aspect the worm thread (21) encloses a smaller volume between successive turns at a base than between successive turns in a part thereof located further toward the outer end.

Abstract: A decoction device for an extraction apparatus, in particular for preparing espresso, comprises a decoction chamber (7) enclosed by a chamber wall (5) for receiving a quantity of powder therein. The decoction chamber is situated between a first chamber bottom (20) and a second chamber bottom (30). The first chamber bottom (20) is coupled to a linear actuator and is axially movable in the decoction chamber so as to compress the powder to a bed. A drive is provided to impose a relative rotation between one of the chamber bottoms and the chamber wall as the chamber bottoms (20,30) approach each other. The respective chamber bottom (30) is for this purpose rotatable within the chamber wall (5) and the drive is able and configured to impose a rotation thereon during an approach movement of the first chamber bottom (20). A slip coupling (60) is provided in the transmission.

Abstract: A device for preparing a coffee product comprises a preparation chamber (135) which is intended and configured to receive and collect a quantity of ground coffee in a coffee bed (125), and pump means (15) for carrying water under increased pressure to the preparation chamber. The preparation chamber (135) is provided with a water inlet (136) for water at increased temperature and pressure on a first side of the coffee bed (125) and with an outlet (137) on an opposite side beyond the coffee bed (125). The outlet is coupled via a liquid conduit (20) to an outflow (6) at which the coffee product can be taken away. The device is provided with an electronic control system (17) which imposes a preparation cycle each time a product is prepared.

Abstract: An apparatus for preparing a beverage comprises a decoction device (5) which comprises a decoction body (50) with a chamber Avail (53) inside which a decoction chamber (54) extends axially between a pair of bottoms (51,52) lying opposite each other. The chamber wall is provided locally with a filling opening (55) for admitting into the decoction chamber at least one ingredient for the beverage to be prepared. The decoction device is coupled to drive means which during operation impart a preparation cycle to the decoction device. A first bottom (51) moves closer to a second bottom (51) here in a first direction from a first starting position. Between a second and a third state the decoction body (50) performs a displacement in the first direction in order to carry the inlet opening (55) outside the decoction chamber. In a third ejecting state the first bottom lies outside the decoction body.

Abstract: Coffee-making device with a piston/cylinder unit, the piston (3) being driven by a drive mechanism. A swivelling arm structure is also driven by means of said drive mechanism (10,11), with the interposition of a cam/cam follower mechanism. The swivelling arm structure is provided with a cover (39) for closing off the free end of the cylinder (2). The cover can be pressed onto the cylinder by means of a cam structure.

Abstract: Coffee-making device with a piston/cylinder unit, the piston (3) being driven by a crankshaft (11). A swivelling arm structure (13) is also driven by means of the crankshaft, with the interposition of a cam/cam follower mechanism. The swivelling arm structure is provided with a cover (19) for closing off the free end of the cylinder (2). The cover can be pressed onto the cylinder by means of a cam structure.

Abstract: The invention relates to an apparatus for brewing a drink, such as coffee. The apparatus comprises a chamber for accommodating a mixture of water and a ground product to be extracted, the chamber having a perforated base on which a strip of filter material can be laid. There is structure on one side of the base for moving the strip of filter material over the base after a quantity of drink has been brewed and has been removed via the piece of filter material. The structure for moving the strip of filter material comprise a separate transport unit, and fixing structure is provided for fixing the transport unit to one of two opposing sides of the base, as desired. The structure for moving the strip of filter material can also comprise a separate guide unit, which is fixed in each case to that side of the base which is opposite to the side where the transport unit is located. A supply unit for filter material can also be fitted at the side of the base where the guide unit is located.

Abstract: Apparatus for preparing beverages such as coffee or tea, comprising a filter unit (3), and extraction chamber (1) positioned above the filter unit, and a reception chamber (2) positioned underneath the filter unit, which reception chamber at the bottom part thereof comprises a discharge channel (9) for discharging the prepared beverage. The apparatus comprises furthermore reservoirs for supplying coffee or tea powder (7) and hot water (6) in the extraction chamber to prepare an extract during a predetermined extraction period, and a control unit (13) controlling the various components such that after activating said reservoirs for supplying predetermined amounts of hot water and coffee or tea powder in the extraction chamber (1), an extraction period is measured during which the extraction porcess is completed, after which the pump (11) unit is activated to suction the prepared extract through the filter paper web (3).